It can be difficult to find reliable data for obscure cartridges. I wrote to Accurate Powders, and they suggested using their 6mm TCU data. I'll probably start with their starting loads for the TCU and go from there. I've found some info on the web, but it's nice to be able to cross reference...
Does anyone have data/loads for this cartridge? (6X45 or 6mm-.223) I have the Nosler manual, and this cartridge isn't listed. I'd like to develop loads for the 80 and 90 grain BT and the 85 grain Partition. Thanks.